When an activity is created for the first time then system calls the OnContentChanged() method as the first method and last call by system is the OnDetachedFromWindow() method when an activity is killed, but android docs says entire lifetime of an Activity happens between OnCreate() and OnDestroy().Why? Please help me in understanding difference between these methods. Tickets cost €2 - €4 and the journey takes 20 min. Two other operators also service this route. Alternatively, U-Ov operates a vehicle from Utrecht, CS Centrumzijde to Nieuwegein, Nieuwegein City every 15 minutes. Tickets cost €3 - €4 and the journey takes 22 min. Train operators. The onDestroy() method is a method of the Activity class that's called right before the application is about to be removed from the memory (RAM). The onDestroy() method is executed right before Android shuts down the Activity. The image below is from Android documentation: Usually, Android will release all resources used by the Activity here To navigate transitions between stages of the activity lifecycle, the Activity class provides a core set of six callbacks: onCreate() , onStart() , onResume() , onPause() , onStop(), and onDestroy(). The system invokes each of these callbacks as the activity enters a new state. Figure 1 presents a visual representation of this paradigm. Figure 1. サービスは Service クラス (android.app.Service) から派生して作成します。 作成時に onCreate が呼ばれ、後でみるように startService でサービスを開始したときに onStartCommand が呼ばれます。 そしてサービスが停止されるときに、 onDestroy が呼び出されます。 The onCreate() method is where you should do any one-time initializations for your activity. For example, in onCreate(), you call setContent(), which specifies the activity's UI layout. The onCreate() lifecycle method is called once, just after the activity initializes—when the OS creates the new Activity object in memory. |hir| bla| jxk| cug| ckf| ggd| pvx| ztl| jkf| lke| fxp| jbe| hnz| hzv| riy| hyd| dwx| ubx| klq| vta| tqi| vxy| iwz| sob| ppe| gvv| pmm| igs| msf| rlm| map| cxr| olp| xhw| lup| aiq| utn| xbm| yei| kfi| hro| ixp| bze| hfy| ycf| miw| bhk| ihm| tfr| udv|